Red blood cell (RBC) and hemoglobin (HGB) levels were lower in the gynecological cancer group than that in the lung cancer group (P = 0.014 and 0.029, respectively), while red cell distribution width (RDW) was higher in the GI cancer group than that in the lung cancer group and gynecological cancer group (P = 0.047 and 0.010, respectively). This evidence concerns the gene CYGB and lung cancer.